Door.



7 nam CHARLES C. TOMKIN SON F PLAINFIELD, NEW JERSEY, ASSIGNOB T0 J.EDWARD OGDEN, 0F MOUNTAINVILLE, NEW YORK.

DOOR.

Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed March 8, 1917. Serial No. 153,246.

, To all whom it may concern:

My invention relates to sectional doorswhich are elevated in opening andtransfer a portion of the weight to an auxiliary support. Furthermore,it has special reference to large, heavy doors which are adapted forwarehouses, pier sheds and the like.

One object of my invention is to equip a sectional door of the aforesaidcharacter with a movable member, such as, for example, an

arm or lever which is adapted to be retracted when the door is closedand automatically moved into position to engage a bracket or othersuitable auxiliary support when the door is in its open position.

Another object is to provide a folding door having a movable arm orother member which is adapted to be moved in response to the relativemovement or folding action of the door sections into a position toengage a stationary bracket or other auxiliary support when the door isopened.

In order that my invention may be thoroughly understood 1 will nowproceed to describe the same in the following specification, and thenpoint out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a sectional elevation of a door equipped with one embodimentof my invention.

Fig. 2 is a view corresponding to Fig. 1, but showing the door in itsopen instead of in its closed position.

Fig. 3 illustrates a modified door structure which also embodies myinvention. This is also a sectional elevation and corresponds to Fig. 2except that the door is not com pletely opened.

In the drawings, designates a post and 11 the lintel of a door frame.The door comprises an upper section 12 hinge-connected above the lintelat 13, an intermediate section 14 connected by hinges 15 to the section12and a sliding bottom section 16. My invention is equally applicable totwo section doors and in fact is applicable to doors of various types.

In the arrangement shown the intermediate section 14 has guideways 17 inwhich the bottom section runs and the bottom section has rollers 18 orother projections which engage the door posts and may cooperate withguides (not shown) thereon in a well known manner.

Secured to the upper door section 12 is a bracket 20 on which a bellcrank lever having arms 21 and 22 is pivotally mounted. The arm 21 ofthe bell crank lever has an extension 23 with which one end of a'spring24 is connected. The other arm 22 has a roller or wheel 25 which isadapted to engage a suitable auxiliary support, such as the stationarybracket 26, which is suspended from ceiling beams 27 and may form partof the ceiling'st ructure. The hoisting mechanism for the door may be ofthe usual type and is designated 28.

A link 29 is pivotally connected at 30 to the intermediate doorsectionld and is provided with a slot 31 near its opposite end whichprovides a lost motion connection between the link and the arm 21 of thebell crank lever. The other end of spring 24 is connected with this link29 at 32. The arrangement of parts is such that when the door is shut,as shown in Fig. 1, the arm 21 is substantiall parallel to the plane ofthe door section 12, and when'the-door is opened the bell crank leverwill be swung into the position illustrated'in Fig. 2, as soon as it isin position for its roller 25 to ride on top of the support 26 with thearm21sub'stantially perpendicular to the plane of the door section 12. e

In other words, the bell crank lever is swung by the link 29 relative tothe door section when the doorsection is completely opened so that theroller arm is substantially parallel to the plane of the door section 12and extends outwardly beyond the door section into engagement with thestationary support 25. t The lost motion provided by the slot 31 allowsfor an increase of the distance between the pivotal connection 30 andthe pin on bell crank lever arm 21 during a part of the folding movementof the door sections,

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without pulling the arm 21 back, as the backward movement of the arm maybe limited.

lhe door shown in Fig. 3 in which corresponding parts are designated bythe same reference characters, is pro vided with a bell crank lever 53pivoted at as on the upper door section 12 (and connected to an armwhich is mounted to slide in a bracket 36 near the bottom edge of theupper door section 12, 1

A roller 3? is mounted on the arm 85 near ts outer end which extendsbeyond the fracliet 36 and sf 38 is arrangel to rot act the es and holdthe roller 3? clo to the bracket 38 except when the door is fullyopened,

The complete closing of the section Acupon the section 122 actuates thedownwardly extending arm 39 of the bell cranlr lever 33 and forces thearm outward in opposition to the spring 38. The roller 3? then ridesonto the stationary support 26 and constitutes a simple ef ective meansfor trans- -fer-ring a part of the weight of? the door to the auxiliarysupport,

Various structural modifications may he eh'ected with n the spirit andscope of my invention, and r if nd only such limitations are indicatedby the appended claims, What claim is:

l. A door adapted be elevated to open, a stationary supportadapted tosustain part of the weight of the door when open, and a relativelymovable member mounted on the door and means for actuating said rnernherinto position to engage said support when the door is opening andretracting said nieni when the door is closing.

A dc adapted to be elevated to open, an auxili Ly stationary supportadaptedto sustain a of the weight of door ano a relatively movable menice door and means for acr into a position to en- 5 ea port, by the move136 in opening and re racting hy the movement of the door in closing,

3. I orisin sections adapted to he i l 1 1 opening, stationary ptedsustain a part of the weig I e door when open, and a memher act d 'itoposition to engage said relative movement between the d s in openii gand retracted in nd a relay support h the sections n the sections are 5.A door adapted to be elevated to open, a stationary support adapted tosustain a part of the weight of the door when open, and a leverpivotally connected to the door and arranged to be actuated by themovement of the door in opening, into position to extend beyond the doorto cooperate with the support when the door is open.

6. A door comprising sections adapted to be folded and elevated inopening, a stationary support adapted to sustain a part of the weight ofthe door when open, and a lever I swings away from the door frame inopening, and a mechanical connection between the bell crank lever andanother section of the door, arranged to turn the bell crank lever intoposition to engage said support when the door is opens in 8a A doorcomprising a pair of hinge-connected sections adaptedto be folded andelea ed in opening, stationary support adapted to sustain a part of theWeight of the door when open, and a member mounted on one of thesections their connected edges and connected to he actuated by the heoth section relative thereto, into on to engage said support.

9. A door comprising a pa of hinge-connected sections adapted he l idedand elevated in opening, a stationary support adapted to sustain a ofthe Weight of '5 e door when open, a hell crank lever mounted on one ofthe sections adjacent to their an actuating link ening swings the n;lever into position to engage said Ms. W.)

:13, A c i i a pair ofhinge-con nected sections adapted to be foldedelevated in stationary support adapted to sustain oi the weight of doorwhen o a bell crank lever sections acent to an actuating link connectingthe bell cranl; lever with the other section, whereby the relativemovement between the sectionsin opening swings hell crank lever intoposition to engage support; and means for retracting the i ll cranklever as the door is closed.

11, door comprising a pair of hinge-connested sections adapted to befolded elevated in opening, a stationary su port adapted to sustain apart of the weig it of the door when open, a bell crank lever mounted onone of the sections adjacent to their connected edges, an actuating linkbetween the bell crank lever and the other section and comprising a lostmotion connection, whereby the relative movement between the sections inopening swings the bell 39 crank lever into position to engage saidsupport, and retracts the bell crank lever as the door is closed and aspring between said bell crank lever and said link.

12. A door adapted to be elevated to open, a stationary support adaptedto sustain a part of the Weight of the door When open, an arm secured tothe door and movable beyond the outer edge of the door when open, and amember adapted to fold as the door is opened and actuate the arm toengage said support. In Witness whereof, I have hereunto set my handthis 6th day of March, 1917.

CHARLES C. TOMKIN SON. Witnesses:

HENRY SHANz, I. B. MOORE.

